Aluminum alloy purification and classification centrifugal machine

Abstract

The utility model belongs to the technical field of metallurgy and centrifugal classification, and discloses an aluminum alloy purification and classification centrifugal machine device which comprises a centrifugal rotating mechanism, a heating and heat preservation mechanism, a melt separation mechanism and a filling mechanism. The centrifugal rotating mechanism realizes high-speed rotating separation through a centrifugal main shaft and a centrifugal screen; the heating insulation mechanism is composed of a heating furnace top shell, a side shell and a bottom insulation layer, and a high-temperature operation environment is ensured; the melt separation mechanism comprises a centrifugal separation baffle, a launder and a discharge port and is used for effectively separating impurities from aluminum alloy melt; the filling mechanism comprises a furnace cover lifting rod, a rotating column and a lifting column and is used for filling samples and sealing the furnace cover. According to the device, aluminum alloy high-temperature purification and grading are carried out under the supergravity centrifugal condition, high-added-value cast aluminum alloy can be separated out, and the device has the advantages of being mature in technology, stable in equipment operation and high in industrialization potential.

Description

Technical Field

[0001] The utility model belongs to the technical field of metallurgy and centrifugal classification, and relates to a production process for metal alloy classification, in particular to a classification and purification process equipment for metal aluminum alloy. Background Art

[0002] At present, aluminum alloy is the most widely used nonferrous metal material. With its light weight, high strength and good corrosion resistance, it is widely used in various industries in the construction of the national economy and plays a vital role. With the advancement of technology and the improvement of environmental awareness, the application prospects of aluminum alloy will be broader. Aluminum alloy is often accompanied by other metal impurities during recycling or smelting, which limits its use and its price, thus restricting the production and application of aluminum alloy recycling or smelting. By grading aluminum alloy and removing impurities to make it a casting aluminum alloy that meets industrial standards, it is undoubtedly of great significance in terms of product market development and economic value.

[0003] Patent CN217411125U in the prior art discloses "a high temperature resistant centrifuge". This method has inner and outer drums installed inside the shell, an insulation layer is set between the drums, the bottom of the outer drum is fixedly connected to the main shaft, and the main shaft is wrapped with a connected coolant chamber; the machine includes an outer drum and an inner drum, and the inner drum is detachable. After the high temperature separation process is completed, the inner drum can be taken out to process the centrifugally separated materials. However, the high temperature range of this utility model is 70~130℃, which is quite different from the temperature at which the alloy can be separated, and it is impossible to separate aluminum alloys. Therefore, this patented device cannot be used in the alloy classification direction above 200℃.

[0004] Patent CN2109354024A in the prior art discloses "a novel device and method for separating and removing impurities from industrial silicon". This method places a crucible in a furnace body, then adds materials into the furnace, adds a cover plate on the top, heats the materials in the crucible through a magnetic induction coil and a graphite heating plate, and adds protective gas. A rotary drive mechanism is added to the bottom of the crucible to drive the crucible to rotate, so that it generates a large centrifugal force to separate and remove impurities. However, the graphite crucible used in this utility model must be protected by gas, and severe graphite ablation results in insufficient strength and cannot be used industrially; the impurities separated by this utility model adhere to the inner wall of the crucible and cannot be effectively separated from the raw materials. Utility Model Content

[0005] The technical problem to be solved by the utility model is: to design an aluminum alloy purification and classification centrifuge to effectively separate the aluminum alloy from other impurities at high temperature, separate high value-added casting aluminum alloy, and the centrifuge can be applied in large-scale industrialization.

[0006] The technical solution of the utility model is as follows:

[0007] An aluminum alloy purification and classification centrifuge comprises a centrifugal rotating mechanism, a heating and heat preservation mechanism, a melt separation mechanism, and a filling mechanism;

[0008] The centrifugal rotating mechanism comprises a centrifuge seat, a bearing seat is fixedly installed on the centrifuge seat, a centrifugal main shaft is installed inside the bearing seat, an upper bearing and a lower bearing are respectively arranged at the upper and lower parts of the bearing seat, the upper bearing and the lower bearing are respectively fixed to the bearing seat by an upper bearing gland and a lower bearing gland, the upper end of the centrifugal main shaft is connected to the centrifugal screen base by bolts, the upper end of the centrifugal screen base is connected to the central positioning column of the material rack, the lower end of the inner side of the centrifugal screen is welded to the outer side of the centrifugal screen base, a centrifugal belt driven wheel is arranged on the side of the lower end of the centrifugal main shaft, the centrifugal belt driven wheel is connected to the centrifugal belt driving wheel through a centrifugal belt, and the centrifugal belt driving wheel is connected to the output shaft of the centrifugal motor;

[0009] The heating and heat preservation mechanism comprises a heating furnace top shell, a heating furnace side shell and a heating furnace bottom insulation layer, the heating furnace bottom insulation layer is laid in the gap formed by the bearing seat above the centrifuge seat and the centrifugal screen foundation and the flow channel, the heating furnace side shell is installed on the centrifuge seat, the heating furnace top shell is installed on the upper part of the heating furnace side shell, the heating furnace top insulation layer is arranged inside the heating furnace top shell and is fixed by a top insulation layer fixing net, the heating furnace side insulation layer is arranged inside the heating furnace side shell, and the heating furnace heating belt is arranged on the heating furnace side insulation layer;

[0010] The melt separation mechanism includes a centrifugal separation baffle, a flow channel and a discharge port. The centrifugal separation baffle is arranged on the outside of the centrifugal screen and fixed on the side shell of the heating furnace. The flow channel is arranged below the gap between the centrifugal separation baffle and the centrifugal screen. The lower end of the centrifugal separation baffle and the outer edge of the centrifugal screen base are provided with the inner side of the flow channel. The bottom opening of the flow channel is connected to the discharge port. A discharge port shell is arranged outside the discharge port. A discharge port insulation layer and a discharge port heating belt are arranged between the discharge port shell and the discharge port in sequence.

[0011] The loading mechanism comprises a furnace cover positioning column, a furnace cover lifting rod, a furnace cover chain, a furnace cover stabilizing column, a furnace cover rotating column, a furnace cover lifting column, a reduction gear box, and a furnace cover lifting motor.

[0012] There is a fan on the top of the centrifuge furnace cover.

[0013] The top of the heating and heat-insulating mechanism is provided with a top temperature measuring hole and a top air hole which pass through the top shell, the top heat-insulating layer of the heating furnace and the heat-insulating layer fixing net.

[0014] The bottom of the heating and heat-insulating mechanism is provided with a side temperature measuring hole which passes through the side shell of the heating furnace and the side heat-insulating layer of the heating furnace and is located below the flow channel.

[0015] A cooling groove is arranged inside the centrifugal main shaft, and the cooling groove is connected to a cooling water rotary joint installed at the bottom of the centrifugal main shaft through a pipeline.

[0016] The furnace cover lifting rod, furnace cover stabilizing column and furnace cover rotating column are welded and fixed; the furnace cover rotating column is installed on the furnace cover lifting column; the bottom of the furnace cover lifting column is connected to the reduction gear box and the furnace cover lifting motor; when the furnace cover lifting motor is working, the movement of the furnace cover lifting column can be controlled by the reduction gear box, thereby driving the furnace cover to rise and fall; there is a positioning hole on the top of the furnace cover, and when the furnace cover is lowered, the furnace cover positioning column can pass through the furnace cover positioning hole.

[0017] The upper end of the centrifugal separation baffle is connected to the side shell of the heating furnace through the separation baffle fixing hole.

[0018] The furnace cover lifting rod is connected to the furnace cover through a furnace cover chain.

[0019] The bearing seat contains a cooling water tank, which is provided with a cooling water inlet and a cooling water outlet.

[0020] There is a material rack rotation positioning block at the upper end of the centrifugal screen.

[0021] The mesh diameter of the centrifugal screen is 30mm apart along the main axis, the mesh spacing of adjacent layers in the annular direction of the centrifuge screen is 10mm apart, and the offset angle of adjacent layers in the main axis direction is 2.8 square.

[0022] The method of using the utility model is as follows: start the furnace cover lifting motor, drive the reduction gear box to lift the furnace cover lifting column, and lift the furnace cover from the furnace cover positioning column; rotate the furnace cover lifting rod, place the furnace cover on the side of the centrifuge, and conveniently load the material or material rack; after loading the sample, cover the furnace cover. Start the centrifugal heating, heat the discharge port, and rotate the main motor of the centrifuge. After reaching the specified temperature and time, the molten body is separated at high speed; the molten body flows through the sieve hole to the baffle, and flows from the baffle into the flow channel to the discharge port, and the sample flowing out is a high-value-added cast aluminum alloy.

[0023] The device of the utility model can be used to purify and grade aluminum alloys by applying ultra-gravity centrifugal conditions to aluminum alloy samples in a high-temperature environment, and separate high-value-added cast aluminum alloys. The centrifuge can be applied industrially on a large scale. The components of the device of the utility model have mature processes, and the heating device and cooling device in the device can ensure the long-term normal operation of the centrifuge equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a front cross-sectional view of an aluminum alloy purification and grading centrifuge device of the utility model.

[0025] Figure 2 It is a side sectional view of an aluminum alloy purification and grading centrifuge device of the utility model.

[0026] Figure 3 It is a schematic diagram of the lifting motor of the centrifuge device of the utility model. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings to illustrate the technical solution of the present invention in detail. Example

[0028] like Figure 1 , Figure 2 , Figure 3 The aluminum alloy purification and classification centrifuge shown includes: a centrifugal rotating mechanism, a heating and heat preservation mechanism, a melt separation mechanism, and a filling mechanism;

[0029] The centrifugal rotating mechanism comprises a centrifuge seat 14, a bearing seat 15 is fixedly mounted on the centrifuge seat 14, a centrifugal main shaft 51 is mounted inside the bearing seat 15, an upper bearing 24 and a lower bearing 22 are respectively arranged at the upper and lower parts of the bearing seat 15, the upper bearing 24 and the lower bearing 22 are respectively fixed on the bearing seat 15 by an upper bearing gland 25 and a lower bearing gland 17, the upper end of the centrifugal main shaft 51 is connected to the centrifugal screen base 28 by bolts, the upper end of the centrifugal screen base 28 is connected to the central positioning column 29 of the material rack by bolts, the inner lower end of the centrifugal screen 30 is welded to the outer side of the centrifugal screen base 28, a centrifugal belt driven wheel 18 is arranged on the side of the lower end of the centrifugal main shaft 51, the centrifugal belt driven wheel 18 is connected to the centrifugal belt driving wheel 39 through a centrifugal belt 41, and the centrifugal belt driving wheel 39 is connected to the output shaft of the centrifugal motor 38;

[0030] The heating and heat preservation mechanism comprises a heating furnace top shell 2, a heating furnace side shell 5 and a heating furnace bottom heat preservation layer 27, the heating furnace bottom heat preservation layer 27 is laid in the gap formed by the bearing seat 15 above the centrifuge seat 14 and the centrifugal screen foundation 28 and the flow channel 9, the heating furnace side shell 5 is installed on the centrifuge seat 14, the heating furnace top shell 2 is installed on the upper part of the heating furnace side shell 5, the heating furnace top heat preservation layer 3 is arranged inside the heating furnace top shell 2 and is fixed by the top heat preservation layer fixing net 4, the heating furnace side heat preservation layer 6 is arranged inside the heating furnace side shell 5, and the heating furnace heating belt 7 is arranged on the heating furnace side heat preservation layer 6;

[0031] The melt separation mechanism includes a centrifugal separation baffle 8, a flow channel 9 and a discharge port 10. The centrifugal separation baffle 8 is arranged on the outside of the centrifugal screen 30 and fixed on the side shell 5 of the heating furnace. The flow channel 9 is arranged below the gap between the centrifugal separation baffle 8 and the centrifugal screen 30. The lower end of the centrifugal separation baffle 8 and the outer edge of the centrifugal screen base 28 are provided with the inner side of the flow channel 9. The bottom opening of the flow channel 9 is connected to the discharge port 10. The outside of the discharge port 10 is provided with a discharge port shell 13. The discharge port insulation layer 12 and the discharge port heating belt 11 are arranged between the discharge port shell 13 and the discharge port 10 in sequence.

[0032] The loading mechanism includes a furnace cover positioning column 42, a furnace cover lifting rod 43, a furnace cover chain 44, a furnace cover stabilizing column 45, a furnace cover rotating column 46, a furnace cover lifting column 47, a reduction gear box 48, and a furnace cover lifting motor 49.

[0033] A fan 34 is provided on the top of the furnace cover. A fan motor 37 and a fan motor bracket 36 for fixing the fan motor 37 are provided outside the side shell 5 of the heating furnace. The fan motor 37 is connected to the fan 34 on the top of the furnace cover in the heating furnace through a rotating shaft.

[0034] A top temperature measuring hole 1 and a top air hole 35 passing through the top shell 2, the top insulation layer 3 of the heating furnace and the insulation layer fixing net 4 are arranged on the top of the heating and heat-insulating mechanism.

[0035] A side temperature measuring hole 26 is provided at the bottom of the heating and heat-insulating mechanism, which passes through the side shell 5 of the heating furnace and the side heat-insulating layer 6 of the heating furnace and is located below the flow channel 9.

[0036] A cooling groove 50 is provided inside the centrifugal main shaft 51 , and the cooling groove 50 is connected to a cooling water rotary joint 19 installed at the bottom of the centrifugal main shaft 51 through a pipeline.

[0037] The furnace cover lifting rod 43, the furnace cover stabilizing column 45 and the furnace cover rotating column 46 are welded and fixed; the furnace cover rotating column 46 is installed on the furnace cover lifting column 47; the bottom of the furnace cover lifting column 47 is connected to the reduction gear box 48 and the furnace cover lifting motor 49; when the furnace cover lifting motor 49 is working, the movement of the furnace cover lifting column 47 can be controlled by the reduction gear box 48, thereby driving the furnace cover to be lifted and lowered; there is a positioning hole on the top of the furnace cover, and when the furnace cover is lowered, the furnace cover positioning column 42 can pass through the furnace cover positioning hole.

[0038] The upper end of the centrifugal separation baffle 8 is connected to the side shell 5 of the heating furnace through the separation baffle fixing hole 33.

[0039] The furnace cover lifting rod 43 is connected to the furnace cover through a furnace cover chain 44 .

[0040] The bearing seat 15 contains a cooling water tank 23 , and the cooling water tank 23 is provided with a cooling water inlet 16 and a cooling water outlet 21 .

[0041] A material rack rotation positioning stop 32 is provided at the upper end of the centrifugal screen 30 .

[0042] The mesh holes 31 have a diameter of 10 mm, and are spaced 30 mm apart along the main axis. The mesh holes of adjacent layers in the annular direction of the centrifugal screen 30 are spaced 10 mm apart, and the mesh holes of adjacent layers in the main axis direction are offset at an angle of 2.8°.

[0043] When in use, the surface of the centrifugal screen, centrifugal separation baffle, flow channel, and discharge port is sprayed with mold release agent, high-temperature lubricating oil is added to the bearing oil filling port 20, the bearing seat is connected to the water inlet and outlet, and the cooling water rotary joint is connected to the circulating water; the furnace cover lifting motor is started to drive the reduction gear box to lift the furnace cover lifting column, and the furnace cover is lifted from the furnace cover positioning column; the furnace cover lifting rod is rotated, the furnace cover is placed on the side of the centrifuge, and the material or material rack is loaded; after the sample is loaded, the furnace cover is covered. Start centrifugal heating, heat the discharge port, the top fan motor, and the main motor of the centrifuge rotate. After reaching the specified temperature and time, the molten body is separated at high speed; the molten body flows through the sieve hole to the baffle, and flows from the baffle into the flow channel to the discharge port. The sample flowing out is a high-value-added cast aluminum alloy.

[0044] Start the centrifuge, set the rotation speed frequency control to 10Hz, set the heating temperature to 750℃, heat to the specified temperature and keep warm for 3h; place a receiving trough at the discharge port, set the rotation speed frequency control to 50Hz, and centrifuge for 3h; turn off the heating after centrifugation, and turn off the centrifuge when the temperature of the heating furnace drops to room temperature; raise the furnace cover and take out the remaining materials or racks.

[0045] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. An aluminum alloy purification and classification centrifuge, characterized in that: It includes a centrifugal rotating mechanism, a heating and heat preservation mechanism, a melt separation mechanism, and a filling mechanism; The centrifugal rotating mechanism comprises a centrifuge base (14), a bearing base (15) is fixedly mounted on the centrifuge base (14), a centrifugal main shaft (51) is mounted inside the bearing base (15), an upper bearing (24) and a lower bearing (22) are respectively arranged at the upper and lower parts of the bearing base (15), the upper bearing (24) and the lower bearing (22) are respectively fixed to the bearing base (15) by an upper bearing pressure cover (25) and a lower bearing pressure cover (17), the upper end of the centrifugal main shaft (51) is connected to a centrifugal screen base (28) by bolts, the upper end of the centrifugal screen base (28) is connected to a central positioning column (29) of a material rack by bolts, the inner lower end of the centrifugal screen (30) is welded to the outer side of the centrifugal screen base (28), a centrifugal belt driven wheel (18) is arranged on the side surface of the lower end of the centrifugal main shaft (51), the centrifugal belt driven wheel (18) is connected to a centrifugal belt driving wheel (39) through a centrifugal belt (41), and the centrifugal belt driving wheel (39) is connected to an output shaft of a centrifugal motor (38); The heating and heat-insulating mechanism comprises a heating furnace top shell (2), a heating furnace side shell (5) and a heating furnace bottom heat-insulating layer (27), the heating furnace bottom heat-insulating layer (27) being laid in a gap formed by a bearing seat (15) above a centrifuge seat (14) and a centrifugal screen base (28) and a flow channel (9), the heating furnace side shell (5) being mounted on the centrifuge seat (14), the heating furnace top shell (2) being mounted on the upper part of the heating furnace side shell (5), a heating furnace top heat-insulating layer (3) being arranged inside the heating furnace top shell (2) and being fixed by a top heat-insulating layer fixing net (4), a heating furnace side heat-insulating layer (6) being arranged inside the heating furnace side shell (5), and a heating furnace heating belt (7) being arranged on the heating furnace side heat-insulating layer (6); The melt separation mechanism comprises a centrifugal separation baffle (8), a flow channel (9) and a discharge port (10); the centrifugal separation baffle (8) is arranged outside the centrifugal screen (30) and fixed on the side shell (5) of the heating furnace; the flow channel (9) is arranged below the gap between the centrifugal separation baffle (8) and the centrifugal screen (30); the lower end of the centrifugal separation baffle (8) and the outer edge of the centrifugal screen base (28) are provided with the inner side of the flow channel (9); the bottom opening of the flow channel (9) is connected to the discharge port (10); the discharge port (10) is provided with a discharge port shell (13) outside; and a discharge port insulation layer (12) and a discharge port heating belt (11) are arranged in sequence between the discharge port shell (13) and the discharge port (10); The loading mechanism comprises a furnace cover positioning column (42), a furnace cover lifting rod (43), a furnace cover chain (44), a furnace cover stabilizing column (45), a furnace cover rotating column (46), a furnace cover lifting column (47), a reduction gear box (48), and a furnace cover lifting motor (49).

2. The alloy purification and classification centrifuge according to claim 1, characterized in that: A fan (34) is provided on the top of the furnace cover.

3. The alloy purification and classification centrifuge according to claim 1, characterized in that: The top of the heating and heat-insulating mechanism is provided with a top temperature measuring hole (1) and a top air hole (35) which pass through the top outer shell (2), the top heat-insulating layer (3) of the heating furnace and the heat-insulating layer fixing net (4).

4. The alloy purification and classification centrifuge according to claim 1, characterized in that: The bottom of the heating and heat-insulating mechanism is provided with a side temperature measuring hole (26) which passes through the side shell (5) of the heating furnace and the side heat-insulating layer (6) of the heating furnace and is located below the flow channel (9).

5. The alloy purification and classification centrifuge according to claim 1, characterized in that: A cooling groove (50) is provided inside the centrifugal main shaft (51), and the cooling groove (50) is connected to a cooling water rotary joint (19) installed at the bottom of the centrifugal main shaft (51) through a pipeline.

6. The alloy purification and classification centrifuge according to claim 1, characterized in that: The furnace cover lifting rod (43), the furnace cover stabilizing column (45) and the furnace cover rotating column (46) are welded and fixed; the furnace cover rotating column (46) is installed on the furnace cover lifting column (47); the bottom of the furnace cover lifting column (47) is connected to the reduction gear box (48) and the furnace cover lifting motor (49); when the furnace cover lifting motor (49) is working, the movement of the furnace cover lifting column (47) can be controlled by the reduction gear box (48), thereby driving the furnace cover to be lifted; there is a positioning hole on the top of the furnace cover, and when the furnace cover is lowered, the furnace cover positioning column (42) can pass through the furnace cover positioning hole.

7. The alloy purification and classification centrifuge according to claim 1, characterized in that: The upper end of the centrifugal separation baffle (8) is connected to the side shell (5) of the heating furnace via the separation baffle fixing hole (33).

8. The alloy purification and classification centrifuge according to claim 1, characterized in that: The furnace cover lifting rod (43) is connected to the furnace cover via a furnace cover chain (44).

9. The alloy purification and classification centrifuge according to claim 1, characterized in that: The bearing seat (15) contains a cooling water tank (23) therein, and the cooling water tank (23) is provided with a cooling water inlet (16) and a cooling water outlet (21).

10. The alloy purification and classification centrifuge according to claim 1, characterized in that: A material rack rotation positioning stop (32) is provided at the upper end of the centrifugal screen (30).

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